منابع مشابه
Controlling the size of magnetic nanoparticles using pluronic block copolymer surfactants.
We have successfully controlled the size of magnetic nanoparticles by adjusting the surfactant/solvent ratio. Gamma-Fe(2)O(3) nanoparticles of 5.6 and 12.7, and Fe(0) nanoparticles of 22.3 nm in diameter were prepared, all having spherical shape and uniform size as confirmed by TEM. Mössbauer spectra confirmed Fe(3+) for the 5.6 and 12.7 nm particles and Fe(3+) and Fe(0) for 22.3 nm particles, ...
متن کاملNatural surfactants
The ever-increasing environmental concern about surfactants triggers an interest in natural surfactant. This review, which has an emphasis on work published since 1998, covers three categories of natural surfactants: amphiphiles produced by yeast or bacteria, amphiphiles containing a natural polar headgroup and amphiphiles containing a natural hydrophobic tail. Microorganisms produce both high ...
متن کاملIonophoric activity of pluronic block copolymers.
Pluronic block copolymers (triblock copolymers of poly(ethylene oxide) and poly(propylene oxide)) exhibit a chemosensitizing effect on multidrug resistant cell lines. Changes in membrane permeability are hypothesized to be responsible because inhibition of drug transport mediated by both the multidrug-resistance-associated protein and the P-glycoprotein drug efflux system has been observed. To ...
متن کاملPluronic polymer capped biocompatible mesoporous silica nanocarriers.
A facile self-assembly method is described to prepare PEGylated silica nanocarriers using hydrophobic mesoporous silica nanoparticles and a pluronic F127 polymer. Pluronic capped nanocarriers revealed excellent dispersibility in biological media with cyto- and blood compatibilities.
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The surface force profiles between an atomic force microscopy (AFM) tip and a self-assembled monolayer of noctadecyltrichlorosilane on oxidized silicon were measured in an ABA triblock series of silicone and Pluronic surfactant solutions. Changes in steric force barrier thickness and height were examined as a function of hydrophobic and hydrophilic block size and ethanol to water ratio in mixed...
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ژورنال
عنوان ژورنال: Journal of Japan Oil Chemists' Society
سال: 2000
ISSN: 1341-8327,1884-1996
DOI: 10.5650/jos1996.49.1071